Feb 02 2020
Flexisip is a complete, modular and scalable SIP server suite written in C++11, comprising proxy, presence and group chat functions.
Flexisip offers an easy-to-install SIP server solution, offering all the features required to deploy your own SIP service tuned for mobile or desktop applications, “out of the box”.
Flexisip can be integrated into your SIP infrastructure for various purposes : Continue reading
Feb 02 2020
I installed Flexisip using official documentation , installed additional components like MariaDB (MySQL) and Redis, performed initial setup of configuration files, created database and DB user.
I started flexisip services with
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systemctl start flexisip-proxy flexisip-presence flexisip-conference |
and by looking in /var/opt/belledonne-communications/log/flexisip/flexisip-conference.log I noticed the following error:
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2020-02-02 03:12:30:790 liblinphone-message-Linphone core [0x56197d8a7d60] notified [global_state_changed] 2020-02-02 03:12:30:790 liblinphone-message-No charset defined forcing utf8 4 bytes specially for conference subjet storage 2020-02-02 03:12:30:790 liblinphone-message-Opening linphone database db=xxx user=xxx password='xxx' host=127.0.0.1 charset=utf8mb4 with backend Mysql 2020-02-02 03:12:30:791 liblinphone-warning-Unable to build db session with uri: Failed to find shared library for backend mysql 2020-02-02 03:12:30:791 liblinphone-error-Unable to open linphone database with uri db=xxx user=xxx password='xxx!' host=127.0.0.1 charset=utf8mb4 and backend Mysql 2020-02-02 03:12:30:791 bctbx-error-Linphone Core couldn't start because the connection to the database has failed |
Jan 24 2020
There are best practices in Magento 2 performance configuration of operating system, MySQL, PHP and webserver. This article covers important configurations of all components that will speed up the Magento site.
Jan 24 2020
There are different ways of building your own anti-DDoS rules for iptables. This guide will describe comprehensive approach to protect server from DDoS attacks:
Here we’ll only cover protection from TCP-based attacks. Most UDP-based attacks are amplified reflection attacks that will exhaust the network interface card of any common server. Continue reading
Jan 10 2020
When I launched Selenium tests In Jenkins with Maven on CentOS 7 I got:
unknown error: Chrome failed to start: exited abnormally
(unknown error: DevToolsActivePort file doesn’t exist)
(The process started from chrome location /usr/bin/google-chrome is no longer running, so ChromeDriver is assuming that Chrome has crashed.)
Full error:
org.openqa.selenium.WebDriverException:
unknown error: Chrome failed to start: exited abnormally
(unknown error: DevToolsActivePort file doesn't exist)
(The process started from chrome location /usr/bin/google-chrome is no longer running, so ChromeDriver is assuming that Chrome has crashed.)
Build info: version: '3.141.59', revision: 'e82be7d358', time: '2018-11-14T08:17:03'
System info: host: 'testenv', ip: '192.168.3.33', os.name: 'Linux', os.arch: 'amd64', os.version: '3.10.0-693.17.1.el7.x86_64', java.version: '1.8.0_152'
Driver info: driver.version: ChromeDriver
remote stacktrace: #0 0x561bcf9f2479
Continue reading
Jan 06 2020
In addition to its good performance and capacitive battery, at an attractive price, the Ergo B501 firmware has several apk built-in that force the advertisement to load after some time using the device. The latest official firmware at the moment: Ergo B501_OS3.0 Lite_20171117 .
You can get rid of viruses in Ergo B501 by flashing a virus-free firmware. Continue reading
Jan 03 2020
LUKS (Linux Unified Key Setup) is the standard for Linux hard disk encryption. By providing a standard on-disk-format, it does not only facilitate compatibility among distributions, but also provides secure management of multiple user passwords. In contrast to existing solution, LUKS stores all setup necessary setup information in the partition header, enabling the user to transport or migrate his data seamlessly. (source: http://code.google.com/p/cryptsetup/) Continue reading
Jan 03 2020
RunAs is a very useful command on Windows OS. This command enables one to run a command in the context of another user account. One example scenario where this could be useful is: Suppose you have both a normal user account and an administrator account on a computer and currently you are logged in as normal user account. Now you want to install some software on the computer, but as you do not have admin privileges you can’t install the same from the current account. One option is to switch user and login as administrator. Instead, you can do the same by simply using runas command. You just need to launch the installer from command prompt using runas command and by providing administrator login id and password. Continue reading
Dec 11 2019
When deploying a recent Skype for Business Server 2019 deployment, I came across an issue when installing monitoring reports on a server. In previous editions of SQL Server, SQL Server Reporting Services (SSRS) was installed and configured by default. With the release of SQL Server 2017, this is now a seperate download that only installs the service. After installing SSRS, the Report Server Web Service/Report Manager in Reporting Services Configuration Manager needed to be configured.
Dec 03 2019
While publishing Skype for Business topology when new databases has to be created on Backend servers there may be an error publishing topology upon execution of Install-CsDatabase cmdlet:
Error: The network name cannot be found.
▼ Details
└ Type: IOException
└ ▼ Stack Trace
└ at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.Directory.InternalCreateDirectory(String fullPath, String path, Object dirSecurityObj, Boolean checkHost)
at System.IO.Directory.InternalCreateDirectoryHelper(String path, Boolean checkHost)
at Microsoft.Rtc.Common.Data.DatabaseManager.CreateDatabase(String dbFileBase, String dbPath, String logPath, Int32 dbSizeMB, Int32 logSizeMB, Int32 dbGrowthMB, Int32 logGrowthMB, Int32 maxDbSizeMB, Int32 maxLogSizeMB)
at Microsoft.Rtc.Common.Data.DatabaseManager.CleanInstallDatabase(String dbFileBase, String initialScripfilePath, String dbPath, String logPath, Int32 dbSizeMB, Int32 logSizeMB, Int32 dbGrowthMB, Int32 logGrowthMB, Int32 maxDbSizeMB, Int32 maxLogSizeMB)
at Microsoft.Rtc.Common.Data.DbSetupBase.CleanInstallDatabase()
at Microsoft.Rtc.Common.Data.DbSetupBase.CreateOrUpdateDatabase()
at Microsoft.Rtc.Management.Deployment.Tasks.DatabaseCreator.CreateDatabaseForFeature(String featureName, Boolean clean, Boolean update, String sqlServer, String instanceName, String databaseType, List`1 databaseNames, Boolean collocated, Boolean backup, Boolean noreindex, DatabasePathAssignment[] pathAssignments, Boolean broadCast, String& logfile)
